I am reviewing Algebra for my GRE test. Here is one inequality problem that I do not understand...I will provide the equation, the choices of answers, and their answer. I want to know HOW they solved it! Thank you!

stapel_eliz, THANK YOU!!I reviewed what you posted, and looked back at the problem...NOW it makes sense!!I see now, they (in the original equation) gave a partial answer.It was a matter of knowing what step to do on the left side, thus you have to do the step on the right side!!Thanks again!